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The emission and absorption profiles in momentum space for electron cyclotron radiation for arbitrary distribution functions are investigated. The absorption profile is very sensitive to the wave parameters and the shape of the electron distribution, in contrast with the emission profile. The ratio between emission and absorption profiles depends in general on the electron velocity. It is shown that for non-Maxwellian distributions the predominant contributions to emission and absorption come from different groups of electrons, a circumstance to be related to the non-validity of Kirchhoff's law.

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Authors: FIDONE I, CEA (FR);GIRUZZI G, CEA (FR);CHIOZZI G, Dipartimento di Fisica, Università di Ferrara (IT)
Bibliographic Reference: Article: Plasma Physics and Controlled Fusion, Vol. 31 (1989) No. 13, pp. 2003-2010
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